Stručni rad

Stereoscopic Visual Acuity in Strabismic and Ametropic/Refractive Amblyopia

Ljubica Dorn
Jelena Petrinović-Dorešić

Sažetak

Reduced stereoscopic visual acuity is commonly found in association with reduced visual acuity or strabismus. These findings belong to clinical features of amblyopia. Strabismic and refractive amblyopia account for the vast majority of amblyopia. The aim of this study was to assess and describe stereoacuity in strabismic and ametropic amblyopia. Cases of strabismic and ametropic/refractive amblyopia were separated from all amblyopic patients examined during a one-year period. The group of strabismic amblyopia included patients with amblyopia, usually unilateral, mostly associated with early onset of strabismus. The group of refractive amblyopias included patients with amblyopia associated with or attributed to previously uncorrected high but equal refractive errors (mostly hyperopia and astigmatism). Stereoscopic visual acuity was tested by Titmus test (housefly, circles, row of animals) and both Lang stereotests (Lang I and Lang II). More than a half (57.8%) of the amblyopia group were patients with strabismic (35%) and ametropic (22.8%) amblyopia. The type and magnitude of ocular deviation, and the amount and type of refraction error clearly influenced the measured values of stereoacuity, indicating stereopsis impairment. Impaired stereopsis was noticeable in severe amblyopia, esotropia or greater hyperopic astigmatism.

Ključne riječi

Stereoscopic visual acuity; Strabismic amblyopia; Ametropic/refractive amblyopia

Hrčak ID:

22770

URI

https://hrcak.srce.hr/22770

Datum izdavanja:

1.4.2008.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.832 *